We present a measurement of the WW + WZ production cross
section observed in a final state consisting of an identified electron
or muon, two jets, and missing transverse energy. The measurement is
carried out in a data sample corresponding to up to 4.6 fb-1 of integrated
luminosity at s**(1/2) ñ.96 TeV collected by the CDF II detector.
Matrix element calculations are used to separate the diboson signal
from the large backgrounds. The WW + WZ cross section is measured
to be 17.4 +/- 3.3 pb, in agreement with standard model predictions.
A fit to the dijet invariant mass spectrum yields a compatible cross
section measurement.
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Updated: Thursday, 2010 December 02 16:15:26 CST automatically from input from Carol Picciolo